Much of the daily heat for greenhouses will come from the sun, but if you want your greenhouse to be more than a few degrees above the outside temperature at night, you will need to provide it with a heat source. The most popular heating systems are be fueled by electricity, propane, or natural gas. The choice of a heating system and fuel depends on what is locally available, the heating requirements of the plants, cost, and individual choice. Heating requirements for your greenhouse can be determined with our Greenhouse Heater Size Calculator. Choose from our assortment of top quality electric and gas heating options below.


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Modine Hot Dawg HD Transformer modine, hot, dawg, hd, dog, gas, heater, transformer, part, hds
Price: $48.00
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Availability: In Stock - Usually ships in 1 to 2 days.
Item #: 4015290 -

    Modine Hot Dawg heater transformer. Modine Part # 5H75029 (Works with all Modine HD & HDS heaters)

    Gas Valve Conversion to Propane Kits heater, gas, valve, conversion, kit, modine, sterling, propane, spring, natural
    Price: $10.00
    Availability: In Stock - Usually ships in 1 to 2 days.
    Item #: 40455 -

      These are propane conversion spring kits for heater gas valves. They do not contain any other parts for converting a heater's gas type. For that, you will need to purchase the entire heater conversion kit for your specific heater model. Modine Heater Gas Valve Model # OptionsSelect the gas valve model # option that STARTS WITH the same numbers or letters as the valve on your heater. Example: You have a RobertShaw model 7200ER valve. Select the RobertShaw 710, 720 option. NOTICE: Gas valves...

      Modine Hot Dawg HD Blower Gasket modine, hd, hot, dawg, blower, gasket, 40152, 4015215, 4015216
      Price: $25.00
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      Availability: In Stock - Usually ships in 1 to 2 days.
      Item #: 40152 -

        Gaskets for providing a seal between the power exhauster and the heater for Modine Hot Dawg HD heaters. Modine Part # Fits Modine Models 5H74996 HD30AH, HD45AH, HD60AH, HD75AH, HD30AS, HD45AS, HD60AS, HD75AS 5H79794 HD100, HDS100, HD125, HDS125 Item # 40152, 4015215, 4015216 ...